A very long conductor carries a current of 1 A . The magnetic field at a point whose distance is 0.1 m from one end of the conductor is (in T )

Question

A very long conductor carries a current of 1 A . The magnetic field at a point whose distance is 0.1 m from one end of the conductor is (in T ) (A)  10-7  (B)  2 × 10-6  (C)  10-3  (D) None of the above

Tardigrade Admin · Accepted Answer

<img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/b52d46734cf441162ee55624dc996c29-.jpeg" /> I=1A, x=0.1 m Magnetic field at point P, B=(μ0 I/4π x)=(1/0.1)×10-7 =10-6 T

Q. A very long conductor carries a current of $1 A$ . The magnetic field at a point whose distance is $0.1 m$ from one end of the conductor is (in $T$ )

$1 0^{- 7}$

$2 \times 1 0^{- 6}$

$1 0^{- 3}$

None of the above

$I = 1 A, x = 0.1 m$
Magnetic field at point $P$ ,
$B = \frac{μ _{0} I}{4 π x} = \frac{1}{0.1} \times 1 0^{- 7}$
$= 1 0^{- 6} T$

Q. A very long conductor carries a current of 1A . The magnetic field at a point whose distance is 0.1m from one end of the conductor is (in T )

10−7

2×10−6

10−3